Question

5 1/3 × 2 1/4 : 4/5 ​

Answer 1

5 1/3 • 2 1/4 : 4/5 = 15

1) 5 1/3 • 2 1/4 = 16/3 • 9/4 = (сокращаем: 16 и 4 = 4 и 1, 3 и 9 = 1 и 3) = 4/1 • 3/1 = 4 • 3 = 12

2) 12 : 4/5 = 12/1 • 5/4 = (сокращаем: 12 и 4 =3 и 1) = 3/1 • 5/1 = 3 • 5 = 15.